Contributing to Sushy

How to contribute

If you would like to contribute to the development of OpenStack, you must follow the steps in this page:

If you already have a good understanding of how the system works and your OpenStack accounts are set up, you can skip to the development workflow section of this documentation to learn how changes to OpenStack should be submitted for review via the Gerrit tool:

Pull requests submitted through GitHub will be ignored.

Bugs should be filed in StoryBoard, not GitHub:

Running a Redfish emulator

Testing and/or developing Sushy without owning a real baremetal machine that supports the Redfish protocol is possible by running an emulator, the sushy-tools project ships with two emulators that can be used for this purpose. To install it run:

sudo pip install --user sushy-tools


Installing the dependencies requires libvirt development files. For example, run the following command to install them on Fedora:

sudo dnf install -y libvirt-devel

Static emulator

After installing sushy-tools you will have a new CLI tool named sushy-static. This tool creates a HTTP server to serve any of the Redfish mockups. The files are static so operations like changing the boot device or the power state will not have any effect. But that should be enough for enabling people to test parts of the library.

To use sushy-static we need the Redfish mockup files that can be downloaded from, for example:


After the download, extract the files somewhere in the file-system:

unzip -d <output-path>

Now run sushy-static pointing to those files. For example to serve the DSP2043-server mockup files, run:

sushy-static --mockup-files <output-path>/DSP2043-server

Libvirt emulator

The second emulator shipped by sushy-tools is the CLI tool named sushy-emulator. This tool starts a ReST API that users can use to interact with virtual machines using the Redfish protocol. So operations such as changing the boot device or the power state will actually affect the virtual machines. This allows users to test the library in a more dynamic way. To run it do


# Or, running with custom parameters
sushy-emulator --port 8000 --libvirt-uri "qemu:///system"

That’s it, now you can test Sushy against the http://localhost:8000 endpoint.

Enabling SSL

Both mockup servers supports SSL if you want Sushy with it. To set it up, first you need to generate key and certificate files with OpenSSL use following command:

openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 365

Start the mockup server passing the --ssl-certificate and --ssl-key parameters to it, for example:

sushy-emulator --ssl-key key.pem --ssl-certificate cert.pem

Now to connect with SSL to the server use the verify parameter pointing to the certificate file when instantiating Sushy, for example:

import sushy

# Note the HTTP"S"
s = sushy.Sushy('https://localhost:8000', verify='cert.pem', username='foo', password='bar')